Last Call: <draft-ietf-spring-segment-routing-13.txt> (Segment Routing Architecture) to Proposed Standard
The IESG <iesg-secretary@ietf.org> Wed, 01 November 2017 21:17 UTC
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From: The IESG <iesg-secretary@ietf.org>
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Subject: Last Call: <draft-ietf-spring-segment-routing-13.txt> (Segment Routing Architecture) to Proposed Standard
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Date: Wed, 01 Nov 2017 14:17:05 -0700
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The IESG has received a request from the Source Packet Routing in Networking WG (spring) to consider the following document: - 'Segment Routing Architecture' <draft-ietf-spring-segment-routing-13.txt> as Proposed Standard The IESG plans to make a decision in the next few weeks, and solicits final comments on this action. Please send substantive comments to the ietf@ietf.org mailing lists by 2017-11-30. Exceptionally, comments may be sent to iesg@ietf.org instead. In either case, please retain the beginning of the Subject line to allow automated sorting. Abstract Segment Routing (SR) leverages the source routing paradigm. A node steers a packet through an ordered list of instructions, called segments. A segment can represent any instruction, topological or service-based. A segment can have a semantic local to an SR node or global within an SR domain. SR allows to enforce a flow through any topological path while maintaining per-flow state only at the ingress nodes to the SR domain. Segment Routing can be directly applied to the MPLS architecture with no change on the forwarding plane. A segment is encoded as an MPLS label. An ordered list of segments is encoded as a stack of labels. The segment to process is on the top of the stack. Upon completion of a segment, the related label is popped from the stack. Segment Routing can be applied to the IPv6 architecture, with a new type of routing header. A segment is encoded as an IPv6 address. An ordered list of segments is encoded as an ordered list of IPv6 addresses in the routing header. The active segment is indicated by the Destination Address of the packet. The next active segment is indicated by a pointer in the new routing header. The file can be obtained via https://datatracker.ietf.org/doc/draft-ietf-spring-segment-routing/ IESG discussion can be tracked via https://datatracker.ietf.org/doc/draft-ietf-spring-segment-routing/ballot/ The following IPR Declarations may be related to this I-D: https://datatracker.ietf.org/ipr/2457/ https://datatracker.ietf.org/ipr/2275/ https://datatracker.ietf.org/ipr/2471/